6349605391 has 4 divisors (see below), whose sum is σ = 6354578952. Its totient is φ = 6344631832.

The previous prime is 6349605347. The next prime is 6349605397. The reversal of 6349605391 is 1935069436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6349605391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349605397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2484865 + ... + 2487418.

It is an arithmetic number, because the mean of its divisors is an integer number (1588644738).

Almost surely, 2^6349605391 is an apocalyptic number.

6349605391 is a deficient number, since it is larger than the sum of its proper divisors (4973561).

6349605391 is a wasteful number, since it uses less digits than its factorization.

6349605391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973560.

The product of its (nonzero) digits is 524880, while the sum is 46.

The square root of 6349605391 is about 79684.4112170003. The cubic root of 6349605391 is about 1851.7495395873.

The spelling of 6349605391 in words is "six billion, three hundred forty-nine million, six hundred five thousand, three hundred ninety-one".